There are multiple artists named Som (or SOM.) The one described is capitalized normally: Som.
These are photos from concerts where SOM played, so they may be of other bands that played the concert as well.
Katatonia / Gost / SOM / He Was A God Nov 10, 2023 Hartford, Connecticut, United States Uploaded by Tim Amato
Rosetta / SOM / So Hideous Jul 31, 2023 New York, New York, United States Uploaded by Joshua B.